<template>
    <div class="header">
       
        <h1>{{msg}}</h1>
    </div>
</template>
<script>
export default{
    name:'',
    data(){
        return {
            msg:'这是头部'
        };
    },
}
</script >
<style scoped>
.header{
    width: 500px;
    height: 300px;
    color: blue;
}
</style>